Islip (ISP) to Boston (BOS) flights
One airline flies nonstop from Islip (ISP) to Boston (BOS): Cape Air. The two airports are 153 miles (246 km) apart. There are also 4 ways to fly it with one stop, through Baltimore, Norfolk and Richmond and more.
Airlines flying nonstop from ISP to BOS
- Cape AirNot in an alliance · bookable with 3 programsWho books it
Book ISP to BOS with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Alaska Atmos RewardsBooks Cape Air
- Delta SkyMilesBooks Cape Air
- JetBlue TrueBlueBooks Cape Air
ISP to BOS with one stop
4 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Baltimore (BWI)Southwest Airlines the whole way
- Via Norfolk (ORF)Breeze Airways, then Delta Air Lines and JetBlue Airways
- Via Richmond (RIC)Breeze Airways, then JetBlue Airways and Delta Air Lines
- Via Raleigh/Durham (RDU)Breeze Airways, then JetBlue Airways, Delta Air Lines and 1 more
ISP to BOS: common questions
Which airlines fly nonstop from ISP to BOS?
Cape Air flies nonstop from Islip (ISP) to Boston (BOS).
How far is Islip from Boston by plane?
Islip (ISP) and Boston (BOS) are 153 miles (246 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book ISP to BOS award flights?
3 programs can book at least one of the nonstop airlines: Alaska Atmos Rewards, Delta SkyMiles and JetBlue TrueBlue. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does ISP to BOS cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for ISP to BOS with taxes and fees.
Where can I connect between Islip and Boston?
The most direct connections are through Baltimore (BWI), Norfolk (ORF), Richmond (RIC) and Raleigh/Durham (RDU). On 1 of them the same airline flies both flights, for example Southwest Airlines through Baltimore.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.